FileWrapper/FileWrapper_Lin.cpp

#ifndef _WIN32
#include "FileWrapper.h"
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <cstdlib>
#include <cstring>

struct DirWalk::_impl
{
    DIR* dir;
    std::string root;
};

DirWalk::DirWalk(const std::string& DirName) : _p(new _impl)
{
    std::string realname = DirName;
    int sz = realname.size();
    if (realname[sz-1] != '/')
    {
        realname.push_back('/');
    }
    if ((_p->dir = opendir(realname .c_str())) != NULL)
    {
        _p->root = realname;
    }
}

DirWalk::~DirWalk()
{
    closedir(_p->dir);
    delete _p;
}

bool DirWalk::isReady() const
{
    return _p->dir != NULL;
}

int DirWalk::next(std::string& name, bool& is_dir)
{
    dirent* file = NULL;
    if ((file = readdir(_p->dir)) != NULL)
    {
        if (file->d_type == DT_DIR)
        {
            if (strcmp(file->d_name, ".") != 0 &&
                strcmp(file->d_name, "..") != 0)
            {
                is_dir = true;
                name = file->d_name;
                return 1;
            }
            else return next(name, is_dir);
        }
        else
        {
            name = file->d_name;
            is_dir = false;
            return 1;
        }
    }
    else
    {
        return 0;
    }
}

std::string DirWalk::getroot() const
{
    return _p->root;
}

#endif // End of ifndef _WIN32